so ,please provide the build number  of the android os for your tablet now

no ,you can't install  iplay50 mini firmware on iplay50

Yes, it is the same model, iplay50, iplay_50

try the newest 0612 firmware

중국 국내 버전과 해외 버전은 서로 다른 버전으로 OTA 온라인을 통해 직접 업그레이드할 수 없습니다.

중국 국내 버전과 국제 버전은 서로 다른 버전으로 OTA 온라인을 통해 직접 업그레이드할 수 없으며 mtk spflashtool을 사용하여 ROM에 쓸 수만 있습니다.

SP_Flash_Tool_V6_Win.rar use this spflashtool

If the startup logo is stuck and the operating system desktop cannot be accessed after the flashing is completed, you can try changing the "download olny" option in the spflash tool to "firmware upgrade" and then try flashing the firmware

https://www.alldocube.com/en/software/14923/ you can find firmware for t1030 on this page

Did an error occur when decompressing the downloaded compressed package?

just use tool in link: mtk sp flash tool: https://mega.nz/file/pF9SVDwT#EfjwPINj9g2MqnCwsnV69kn6FcmugGCMnw4fFaC-PZk. no auth file need

t1011B just have same firmware with the T1011S MODEL